Circa 25,150 BBY, the pirateXer began rapid expansion from his homeworld Argai, creating the Kingdom of Argai within the Kingdom of Cron, King of CronFerece summoned Xer to Chandaar, the capital of Cron. Ferece tried to persuade Xer give an oath of fealty, in return for a number of noble titles, and Xer promised to return in a month with a suitable tribute. However, Xer instead led an attack on Chandaar, causing Ferece and his courtiers to flee. In the absence of Ferece, Xer installed himself as the new King of Cron: Xer VIII.[1]

As the new King of Cron, Xer VIII launched several campaings to expand his territory. He explored all the unknown regions of the Tion Cluster and conquered the Kingdom of Barseg. However he didn't manage to conquer the Livien League, the only part of the Cluster out of his control. Circa 25,130 BBY, near the end of Xer's reign, the Kingdom of Cron was divided in three provinces, very similar to the three future Imperialsectors, which one of them was the original Kingdom of Cron.[1]

Following the death of Xim, c. 25,100 BBY, his empire quickly collapsed and new states were quickly formed out of the former territory of the empire. The Kingdom of Cron became independent again but its territory was considerably reduced, similar to the original kingdom.[1]

Following the end of the Clone Wars, the Galactic Empire divided the Cluster in three sectors. The Kingdom of Cron was reorganized as the Cronese Mandate, a sector almost similar to the historical kingdom[1], and containing the fourteen worlds of the former Kingdom of Cron.[2]